SU445857A1 - Thermocouple for measuring low temperatures - Google Patents
Thermocouple for measuring low temperaturesInfo
- Publication number
- SU445857A1 SU445857A1 SU1854321A SU1854321A SU445857A1 SU 445857 A1 SU445857 A1 SU 445857A1 SU 1854321 A SU1854321 A SU 1854321A SU 1854321 A SU1854321 A SU 1854321A SU 445857 A1 SU445857 A1 SU 445857A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thermocouple
- low temperatures
- measuring low
- thermoelectric
- copper
- Prior art date
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
1one
Изобретение относитс к области тепловых измерений.This invention relates to the field of thermal measurements.
Известны термопары дл измерени низких температур, содержащие положительный термоэлектрод , выполненный из меди, а отрицательный термоэлектрод из сплава меди с железом .Thermocouples for measuring low temperatures are known, containing a positive thermoelectrode made of copper, and a negative thermoelectrode made of an alloy of copper and iron.
Однако такие термопары обладают высокой термоэлектрической неодиородностью и плохой воспроизводимостью термоэлектрических свойств.However, such thermocouples have high thermoelectric non-uniformity and poor reproducibility of thermoelectric properties.
Местна термоэлектрическа неоднородность таких термопар составл ет около 20мкв при температуре 78°К, а разброс между показани ми отдельных термопар достигает 200 мкв.The local thermoelectric heterogeneity of such thermocouples is about 20 µV at a temperature of 78 ° K, and the spread between the readings of individual thermocouples reaches 200 µV.
Отрицательный термоэлектрод предлагаемой термопары выполнен из сплава на основе меди, содержащего железо и литий в количестве 0,003-0,5% и 0,0005-0,005% соответственно .The negative thermoelectrode of the proposed thermocouple is made of an alloy based on copper containing iron and lithium in the amount of 0.003-0.5% and 0.0005-0.005%, respectively.
.Местна термоэлектрическа неоднородность таких температур равна 4 мкв при температуре 78°К, а разброс между показани ми отдельных термопар не превышает 50 мкв. Максимальна чувствительность - пор дка 17 мкв/град вместо 15 мкв/град.The local thermoelectric heterogeneity of such temperatures is 4 µV at a temperature of 78 ° K, and the spread between the readings of individual thermocouples does not exceed 50 µV. Maximum sensitivity is on the order of 17 μV / deg instead of 15 μV / deg.
Предмет изобретени Subject invention
Термопара дл измерени низких температур , содержаща положительный термоэлектрод , выполненный из меди, отличающийс тем, что, с целью получени высокой чувствительности в широком диапазоне температур , снижени термоэлектрической неоднородности и повышени воспроизводимости термоэлектрических свойств, ее отрицательный термоэлектрод выполнен из сплава на основе меди , содержащего железо и литий в количестве 0,003-0,5% и 0,0005-0,005% соответственно.A thermocouple for measuring low temperatures, containing a positive thermoelectric electrode made of copper, characterized in that, in order to obtain high sensitivity over a wide range of temperatures, reduce thermoelectric non-uniformity and increase the reproducibility of thermoelectric properties, its negative thermoelectrode is made of copper-based alloy containing iron and lithium in amounts of 0.003-0.5% and 0.0005-0.005%, respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1854321A SU445857A1 (en) | 1972-12-06 | 1972-12-06 | Thermocouple for measuring low temperatures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1854321A SU445857A1 (en) | 1972-12-06 | 1972-12-06 | Thermocouple for measuring low temperatures |
Publications (1)
Publication Number | Publication Date |
---|---|
SU445857A1 true SU445857A1 (en) | 1974-10-05 |
Family
ID=20534279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1854321A SU445857A1 (en) | 1972-12-06 | 1972-12-06 | Thermocouple for measuring low temperatures |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU445857A1 (en) |
-
1972
- 1972-12-06 SU SU1854321A patent/SU445857A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SU445857A1 (en) | Thermocouple for measuring low temperatures | |
Ginnings et al. | Calorimetric measurement of thermodynamic temperatures above 0 C using total blackbody radiation | |
US2417923A (en) | Thermopile for measuring air temperature | |
Evans | High temperature platinum resistance thermometry | |
SU64454A1 (en) | Nickel alloy for thermocouples | |
SU600481A1 (en) | Temperature measuring method | |
SU152096A1 (en) | A method for measuring temperature differences in an electrically conductive body | |
GOLETSKAIA et al. | Thermal conductivity and thermoelectric power of bismuth telluride at low temperatures(Bismuth telluride single crystals thermal conductivity and thermoelectric power temperature dependence 2. 3-100 K, discussing magnetic field effects) | |
SU808873A1 (en) | Thermocouple | |
SU742723A1 (en) | Compensation wire | |
SU426280A1 (en) | ||
SU736223A1 (en) | Method of determining optimum current of thermoelectric storage batteries | |
SU505908A1 (en) | Thermocouple | |
SU440571A1 (en) | Device for measuring the coefficient of thermoelectromotive force of materials | |
SU499507A1 (en) | The method of temperature measurement with electrical resistance thermometers | |
SU369426A1 (en) | DEVICE FOR CONTROL OF MAXIMUM TEMPERATURE | |
SU471517A1 (en) | Microcalorimeter | |
SU474769A1 (en) | Cell for measuring the differential thermoelectromotive force | |
SU593084A1 (en) | Compensating wire for thermocouple | |
SU141938A1 (en) | Method of measuring thermoelectromotive forces of semiconductor materials | |
SU138395A1 (en) | Method for temperature compensation of radiation pyrometers | |
HAURY | An apparatus for measuring thermal conductivities to 2 degrees K. Measurements in single crystal halides as a function of dislocation density(Apparatus for measuring thermal conductivities to 2 degrees K used for measurements in single crystal halides as function of dislocation density)[Technical Report, Nov. 1968- Mar. 1971] | |
SU389417A1 (en) | ||
SU381918A1 (en) | THERMAL STEAM SENSOR | |
SU439742A1 (en) | The method of analysis of gases for thermal conductivity |